1 Timothy 6     ¹⁴ that you keep this commandment without spot, blameless until our Lord Jesus Christ’s appearing, ¹⁵ which He will manifest in His own time, He who is the blessed and only Potentate, the King of kings and Lord of lords, ¹⁶ who alone has immortality, dwelling in unapproachable light, whom no man has seen or can see, to whom be honor and everlasting power. Amen.

Daniel 2:22   He reveals deep and secret things; He knows what is in the darkness, and light dwells with Him.

This is one of the questions which the Bible does not address directly. Genesis 2 says that Adam and Eve were naked, but not ashamed. They were created in God’s image, as it states in Genesis 1:27. And then, in Genesis 3, after they had sinned by eating the forbidden fruit, they suddenly realised they were naked and made coverings of fig leaves. Before sinning, they were face-to-face with God, in His presence without fear or embarrassment, but after sinning, they hide from Him. It therefore seems very likely that Adam and Eve were covered with light, the glory of God, as the two passages above show God to be, when they were perfect as they were created. When they chose to walk away from God, that glorious light covering was removed, causing them to feel naked, guilty, fearful. 

I trust that this makes sense to you. God bless!